Patents by Inventor Harold S. Koontz

Harold S. Koontz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electrical lead arrangement for a heatable transparency
    Patent number: 4918288
    Abstract: A heated transparency is provided with first and second bus bars along opposing edges of a transparency interconnected by an electroconductive coating. The bus bars and coating are applied to the same surface of the transparency. Electrical leads are spaced from the coated surface and are electrically insulated from the coating and bus bars.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: April 17, 1990
    Assignee: PPG Industries, Inc.
    Inventors: Thomas M. Carter, Harold S. Koontz
  • Power discontinuity sensor for a dual feed heatable windshield
    Patent number: 4902875
    Abstract: A power discontinuity sensor for a heatable windshield with bus bars having a double lead configuration. Sensor lines extend around the perimeter of the windshield in close proximity to adjacent bus bars or leads. The sensor lines are provided with current from an upper bus bar through a connecting bridge along the upper bus bar. Voltage in the sensor lines is monitored and current to the bus bars is interrupted in response to predetermined variations in the measured voltage.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: February 20, 1990
    Assignee: PPG Industries, Inc.
    Inventor: Harold S. Koontz